How hot can you go...?

Over the last couple of months of firing stock for the christmas buyers I have been trying some new glazes, in particular so really unstable glazes that when layered just right and fired to the right temperature I have been getting some amazing results. Yes there has been a few shelves damaged but all worth it to get new results.

This is the cones from a firing I unloaded today - cones # 9-11...nice and hot! Note the clearance on the glaze run off the handle of the casserole in the background.